## Complex numbers

Complex numbers are a group of numbers that help us to get mathematical solutions where real numbers (which includes positive and negative, counting numbers, fractions and decimals) just can’t work. They can be useful in engineering and physical sciences.

They have two parts: one part is an imaginary number. ( For example 3 + 2i) The square of an imaginary number is negative, which is really difficult to imagine!

Download these worksheets to improve your understanding in this area.